Airplane wheel



Oct. 3, 1933.

I. M. COPPOCK AIRPLANE WHEEL Filed July 19, 1930 2 Sheets-Sheet 1 (11101 new Oct. 3, 1933. 1. M CQPPOCK 1,928,882

AIRPLANE WHEEL Filed July 19, 1930 2 Sheets-Sheet 2 Patented Oct. 3, 1933 r g i UNITEDTSTATES PXr NroFFmE 1,928,882 v AIRPLANE WHEEL Ira M. Coppock, Dayton, Ohio, assignor to The Variety Manufacturing Company, Dayton, Ohio, a corporation of Ohio Application July 19, 1930. Serial No. 469,089

1 Claim. (01. 301-37) This invention relates to new and useful impocket to prevent the transfer of heat from the provements in airplane wheels. brake drum '7 to the inner tube (not shown) of It is one of the principal objects of my inventhe tire which the wheel receives. (See Figure tion to provide an airplane wheel which is so 1.) By thus insulating the brake drum from the l 5 constructed that heat from the brake drum cantire, there is no danger of the innertube being 60 not affect the inner tube of the pneumatic tire. burned by the heat generated through contact This is accomplished by the use of an insertible of the brake shoes with the drum. The latter may drum, with an air pocket between the latter and also be easily removed for replacement or rethe wheel wall to resist the passage of heat from pair by unscrewing the studs 9. r

the drum to the inner tube. Formed on the outer end of the hub 1 is a 65 It is another object of my invention to provide short annular flange 11 to which the offset inner an airplane wheel that is easy to assemble and edge portion 12 of a radially disposed disc 13 disassemble because it is held together by bolts is secured by studs 14. Near its outer edge porand nuts, thus facilitating the making of repairs. tion the disc 13 is offset to provide an annular v 15 It is a further object of my invention to proledge 15 to form a seat for an outer flanged 70 vide a stream line disc that is easily applied to, rim 16. and removed from, the outer portion of the wheel. The latter is secured to the disc 13 by through Other important and incidental objects will be hex bolts 17 whose inner reduced threaded ends brought out in the following specification and are screwed into tapped holes in the inner hub particularly set forth in the subjoined claims. extension 2. To the outer ends of these bolts 17 75 In the accompanying drawings illustrating my shouldered nuts 18 are applied, the shoulders on invention, Figure 1 is alongitudinal sectional view the nuts fitting in recesses formed in the outer taken through the wheel. Figure 2 is a view of rim 16. (See Figure 1.) the outer end of the wheel, showing the stream- The disc 15 is formed at its outer edge portion line disc in place. Figure 3 is a detail view of the with an inwardly projecting horizontal ledge 19 80 means for locking the streamline disc in place. that is slightly under a horizontal flange 20 on the Figure 4 is a partial view of the inner end of the rim 16 to receive the outer edge portion of a fiat hub, showing the brake drum. Figure 5 is a cylindrical rim 21. The inner edge portion of partial view of the outer end of the hub. And this flat rim isfitted in the recess in the out- Figure 6 is a cross sectional View taken through wardly inclined part 4 of the hub extension 2. 85 the wheel, showing how the hex studs engage the When the flat rim 21 is applied to the wheel, inner surface of the ring to prevent them from its inner surface will contact the fiat hex porslipping, tions of the bolts 17 to prevent them from turn- Referring to the accompanying drawings for a ing. 1 a

detailed description of my invention, the numeral A streamline cover disc 22 is easily secured to 90 l designates the hub of an airplane wheel castthe outer face portion of the wheel by the foling preferably constructed of an aluminum alloy. lowing means. Referring to Figures 1 and 2, The hub is formed at its inner end with a radial there are formed in the middle portion of the 7 extension flange 2 whose middle part is straight. disc 22, two T slots 23 and 24, one being the same The latter terminates in a flat peripheral pordistance from the center as the other. Fitted tion 3 that ends in a recess formed in an outinto each one of these T slots is the grooved head wardly inclined part 4. This part 4 of the hub 25 of a stud 26. (See Figure 3.) These studs extension 2 integrally supports an inner flanged are adapted to be screwed into tapped holes in the ring 5. offset portion 12 of the disc 13.

Formed in the outer surface of ,the straight The streamline disc 22 is applied to the wheel part of the hub extension 2 is an annular ledge by fitting the head portions of the slots 23 and 6. Adapted to be inserted in the hollow inner 24 over the grooved heads of the studs 26 and portion of the wheel is a brake drum 7 whose then turning the said disc a sufiicient distance to H radial flange portion 8 seats against the ledge bring the heads of said studs to the inner ends 50 6 and whose curved periphery rests against the of the straight portions of said slots. inner edge portion of the integral ring 5. By To hold the head of the studs 26 in the bottom means of studs 9 the brake drum '7 is secured to of the T slots 23 and 24, I provide spring arms the straight portion of the hub extension 2. 27, one for each slot. Each arm is pivotally I Formed in the hub Casting b t t pa ts secured, by a rivet 28, to the cover disc 22 at a '55 4 and 5 is an annular space 10 that forms an air point which will permit the arm to be turned to no engage a circular plug 29 which it carries, in the head portion of the T slot occupied by the grooved head of the stud. When the T slots contain the plugs 29, the streamline cover disc 22 will be firmly secured to the 'wheel by the studs 26, since the grooved'heads 25 of the latter cannot move out of the narrow portions of those slots until the plugs are lifted from their head portions.

It is thus seen that I have provided a streamlined airplane wheel which is easily assembled and disassembled for repair, and which contains an insertible brake drum which is heat insulated 

